Improvement in machines for marking carpenters  squares



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ALBERT M. HEALY, OF BERLIN, CONNECTICUT, AND CHARLES H. RAYMOND, OF

"WOODSTOCK, VERMONT, ASSIGNORS TO THE SOUTHINGTON CUTLERY COMPANY OF SOUTHINGTON, CONNECTICUT.

Letters Patent No. 108,479, dated October 18, 41870.

IMPROVEMENT IN MACHINES FOR MARKING CARPENTERS' SQUVARES.

The Schedule referred to in these Letters Patent and making part of the same.

stitutes part ot' this specification, and represents Figure l, a side view;

Figure 2, a front view; and in Figure 3,11 dia-gram, showing the construction of the rolls.

llhis invention relates` to an improvement iu Inachines for stamping figures upon carpenters squares, the object being to insure the `impression ofthe figures upon the square in their proper place; and, further, to facilitate this process by stamping the figures vinto the square bythe ,process of rolling, instead of by hand-stamps, as heretofore practiced..

The invention' consists- First, in the construction of the,in1pression-roller, of a cani shape, so to forni a slight shoulder at one point in the periphery of the roll, against which `the said shoulder-end ot' the square is placed as a guide for the point of starting, the revolution of the rolls impressing upon one side 'of the square thc figures, which are arranged upon the periphery of' thc roll.

Second, in the arrangement o1" acam so as to operate upon the bearing of one of the rolls/to automatically adjust the roll to the 4increasing thickness or irregular surface of the square, as well as to the cam shape of the roll.

A- isone shaft, arranged in bearings B B.y

C is a second shaft, one end in a bearing, D, the other in an adjustable bearing, E, the two shafts caused to revolve together by gears F, as seen in iig. 1.

On the end ofeaeh of the shafts are arranged rcspectively rollers A and C, of a cani shape, as more clearly seen in lig. 5; that is to'say, at one point d in the surface a shoulder is formed, less than the thickness of the blade of the square, and upon the surface of one ofthe rolls, here represented as the upper, are arranged, at proper intervals, the figures designed to be impressed upon the blade of the square.

The bearing for the shaft of the upper'roll is made so as to inove freely up and down, resting upon a spring, d, with suflicient power to raise the shaft, and is depressed by a cam, f, operating upon a spindle, h, which extends down to' the bearing of the shaft C, and the cam is turned by `a lever, n, and operated so that, by turning the lever and cam to the position denoted in broken lines, iig. 2, the upper roll is brought down vto the lower roll, as also denoted in broken lines, presenting the corresponding shoulders a onthe two rolls together.

His a table, for convenience of introducing the squares to the rolls. The two shoulders a being together, as denoted in g. 2, the thick end of the blade to be stamped is passed between the rolls until it sets against the said shoulder. The lever is weighted or operated by the hand so as to press the roll down with suliicien't force; thenthe two rolls caused to revolve, the square is drawn in,'and the figures on-the surface of the roll impressed thereon, they cam fyiclding to the'nneveimcss on the surface, but yet bearing so as. to impress, with suicient force, the figures into the square.

VFor the transverse unevenness ot' the square, if any occur, we make thebearing D so as to give a slight vertical play to the shaft, sucient to adapt the roll C to the nnevenness transversely on thesquare.

XVe have represented `the two rolls as each coustrncted with a corresponding shoulder, a., but it will be observed that the impression-roll only is necessarily provided with such shoulder, yet we prefer that the shoulder should be formed upon both.

le have also represented as `employing only one of the rolls for stamping, but both rolls may be iiguredin like manner, and thus stamp both sides of the square at the same time.

We clairnas our invention- The impression-roll C', constructed with a shoul der, u, combined with asecond roll, and whether the said second roll be -provided with a corresponding shoulder or not, when one or both of the said rolls are provided with gnres or other devices for marking the surface of squares, substantially as herein set forth.

AA. M. HEALY. C. H. RAYMOND.

\\'itnesses for A. M. H EALY:

W. S. MERRELL, J. W. GRIDLEY.

Witnesses for C. H. RAYMOND S. E. MUNGER, RICHARD DANA. 

